Background:

Chronic cor pulmonale (CPC), with increased presentation in high-altitude inhabitants.

Objectives:

Investigating the frequency of cardiac arrhythmias, and risk factors for its development.

Methods:

Descriptive, cross-sectional study, the inpatient registry of the Department of Cardiology of the National Institute of Torax, La Paz-Bolivia, from January 2017 to June 2018 was reviewed, all were incorporated with the diagnosis of CPC, defined by clinical criteria, electrocardiographic and echocardiographic, 162 patients who met the criteria were taken, the student’s t-test and ANOVA were used for the analysis.

Results:

Arrhythmias: atrial fibrillation (AF) 125 (75%), atrial flutter (AA) 17 (10.5%), atrial tachycardia (AT) 17 (10.5%), extrasystoles 3 (1.9%). Univariate analysis of factors related to the development of arrhythmias: erythrocytosis: FA, RR: 1.33, other arrhythmias RR: 1.67, p = 0.0001, pulmonary arterial hypertension: FA, RR: 3.10, other arrhythmias RR: 3.21, p = 0.0001, right atrial dilation (AD): FA, RR: 1.92, other arrhythmias RR: 2.13, p = 0.0001, obesity: FA, RR: 3.47, p = 0.001, other arrhythmias RR: 3.70, p = 0.001, systemic arterial hypertension: FA: RR: 3.10, p = 0.001, other arrhythmias RR: 3.21, p = 0.001. Multivariate analysis: erythrocytosis (RR: 2.2), AD dilation (RR: 1.2), p = 0.0001.

Conclusions:

AF was found more frequently in patients with CPC, the risk factors with the greatest statistical significance for presentation were: erythrocytosis and AD dilation.

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